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2 years ago

Please help me ! I don’t know !

Mathematics

2 answers:

goblinko [34]2 years ago

7 0

Answer:

Step-by-step explanation:

this will endure the bitextular number course and follow the index pattern once you do that follow the question to get 5

Andre45 [30]2 years ago

5 0

The answer is 5...........

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I need to find the are

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The area should be 48 in squared

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2 years ago

Leonard uses 3 peach slices and 1 banana for his fruit parfaits. If he used 42 peach slices to make parfaits for his friends, ho

Naddika [18.5K]

Answer:ez 26

Step-by-step explanation: how do you not know this

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2 years ago

Read 2 more answers

Find the approximate area between the curve f(x) = -4x² + 32x and on the x-axis on the interval [0,8] using 4 rectangles. Use th

Doss [256]

Split up the interval [0, 8] into 4 equally spaced subintervals:

[0, 2], [2, 4], [4, 6], [6, 8]

Take the right endpoints, which form the arithmetic sequence

$r_i=2+\dfrac{8-0}4(i-1)=2i$

where 1 ≤ <em>i</em> ≤ 4.

Find the values of the function at these endpoints:

$f(r_i)=-4{r_i}^2+32r_i=-16i^2+64i$

The area is given approximately by the Riemann sum,

$\displaystyle\int_0^8f(x)\,\mathrm dx\approx\sum_{i=1}^4f(r_i)\Delta x_i$

where $\Delta x_i=\frac{8-0}4=2$ ; so the area is approximately

$\displaystyle2\sum_{i=1}^4(-16i^2+64i)=-32\sum_{i=1}^4i^2+128\sum_{i=1}^4i=-32\cdot\frac{4\cdot5\cdot9}6+128\cdot\frac{4\cdot5}2=\boxed{320}$

where we use the formulas,

$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$

$\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6$

6 0

2 years ago

If y = x3 - 3 , find the value of y when x = -2

Contact [7]

Y = (-2)3 - 3
Y = -6 - 3
Y= -9

8 0

2 years ago

Translate: The quotient of a number t and 7, plus 2, is -4 ?

Tems11 [23]

The quotient of a number t and 7, plus 2, is -4 ?

t/7 +2 = -4

4 0

2 years ago